Get last part and rest of string: Difference between revisions

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This function returns the last part of a string after a certain character and the rest of the string before that character. If the character is not found within the string, then the function returns two empty strings.
This function returns the last part of a string after a certain character and the rest of the string before that character. If the character is not found within the string, then the function returns two empty strings.


'''14th July 2007''': Fixed infinite loop on empty string.
'''14th July 2007''': Fixed infinite loop on empty string and changed divider character to divider string.


== Usage ==
== Usage ==

Revision as of 12:42, 14 July 2007

Author: Afrow UK (talk, contrib)


Description

This function returns the last part of a string after a certain character and the rest of the string before that character. If the character is not found within the string, then the function returns two empty strings.

14th July 2007: Fixed infinite loop on empty string and changed divider character to divider string.

Usage

Push "o " ; divider str
Push "hello my" ; input string
 Call GetLastPart
Pop $R1 ; last part "my"
Pop $R0 ; first part "hell"

The Function

Function GetLastPart
Exch $R0 ; input
Exch
Exch $R1 ; divider str
Push $R2
Push $R3
Push $R4
Push $R5
 
 StrCpy $R2 -1
 StrLen $R4 $R0
 StrLen $R5 $R1
 Loop:
  IntOp $R2 $R2 + 1
  StrCpy $R3 $R0 $R5 $R2
  StrCmp $R3 $R1 Chop
  StrCmp $R2 $R4 0 Loop
   StrCpy $R0 ""
   StrCpy $R1 ""
   Goto Done
 Chop:
  StrCpy $R1 $R0 $R2
  IntOp $R2 $R2 + $R5
  StrCpy $R0 $R0 "" $R2
 Done:
 
Pop $R5
Pop $R4
Pop $R3
Pop $R2
Exch $R1 ; before
Exch
Exch $R0 ; after
FunctionEnd